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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 10 |
| 4 | 25 |
| 5 | 77 |
| 6 | 279 |
| 7 | 1134 |
| 8 | 4979 |
| 9 | 22981 |
| 10 | 109453 |
| 11 | 531458 |
| 12 | 2610933 |
| 13 | 12917685 |
| 14 | 64181627 |
| 15 | 319695982 |
| 16 | 1594859887 |
| 17 | 7963472189 |
| 18 | 39784944801 |
| 19 | 198827606706 |
| 20 | 993846943841 |
| 21 | 4968361974493 |
| 22 | 24839192686975 |
| 23 | 124188113975630 |
[3,5,10,25,77,279,1134,4979,22981,109453,531458, 2610933,12917685,64181627,319695982,1594859887, 7963472189,39784944801,198827606706,993846943841, 4968361974493,24839192686975,124188113975630] |